搜索

Since any frequent itemset is a subset of a maximal frequent itemset (an itemset is maximal frequent if it has no superset that is frequent), this paper proposes the DMFI (Discovery of Maximal Frequent Itemsets) algorithm for mining all the maximal frequent itemsets from data sets. This algorithm searches the maximal frequent itemsets in data sets from both bottom-up and top-down directions in the meantime. This paper proposes an algorithm that evaluates the boundaries on the support and confidence of uncalculated itemsets by exploiting the information provided by the calculated itemsets.

本文在经典关联规则的基础上，提出了一系列扩展的关联规则开采算法：发现关联规则的难度体现在发现频繁项目集上，事实上最大频繁项目集（其所有的超集都为非频繁项目集的频繁项目集）的集合已经包含了所有的频繁项目集，本文提出一种发现最大频繁项目集的算法DMFI(Discovery Maximal Frequent Itemsets)，该算法采用自底向上和自顶向下相结合的搜索策略对数据空间进行有效的搜索。

The algorithm handles the objective function and constraints separately, and adopts both directional and random search mechanism. It can avoid falling into local optimal point, which may appear in previous bionics random algorithms due to uncertainness of some parameters and/or without guiding search direction.

该算法将目标函数与约束条件分开处理，采用兼具方向性和随机性的搜索机制，避免了已有仿生类算法由于一些参数难以确定和无引导性的搜索方向而陷入局部最优的问题。

Genetic Algorithm is a global algorithm which uses natural law "survival of the fittest, extinction of the unfitness" and natural selection mechanism to guide and determinate search direction.

遗传算法是全局优化的搜索算法，它利用优胜劣汰的自然选择来指导和学习以确定搜索方向。

A real-coded genetic algorithm is adopted using the unimodal normal distribution crossover and the elitist model. And then, the stochastic search algorithm is used to optimize the elitist.

本文选择UNDX交叉算子作为遗传算法的主要算子，在保留当前最佳个体的同时，再对该最佳个体用随机搜索法搜索优化个体。

The ambiguity of DOA estimation due to ignorance of the function form of angular signal distribution is analyzed and the DOA estimation without ambiguity is given. 4. A method of DOA estimation of distributed sources is proposed by using the knowledge of the unimodal property of angular signal distribution and independence between different distributed sources.

利用角信号分布函数的共轭对称性，提出了基于噪声子空间的极小最小特征值一维搜索分布式目标DOA估计方法，和基于信号子空间的极大最大特征值一维搜索分布式目标DOA估计方法。

Over two dozen indexed, unindexed, fielded and full-text search options· highlights hits in HTML, XML and PDF while displaying embedded links, formatting and images

该产品系列包括二十多个文本搜索选项，用于对 Adobe PDF 和其它流行文件类型进行快速精确的在线和离线搜索。dtSearch 产品显示所检索的 Adobe PDF 文件，而且突出显示的命中项目和所有图像保持完好无损。

Uninformed search - An uninformed search algorithm is one that does not take into account the specific nature of the problem.

不了解情况的搜索-搜索算法的不了解是一个没有考虑到的具体性质的问题。

Yet there is a big difference between the best search experiences and the mediocre, unmemorable ones.

但是在最好的搜索体验和普通的搜索体验之间有着非常大的区别。

Also, as search results are accumulated, the amount of unsearched PN space within a window decreases, thereby decreasing the probability of finding a strong pilot and increasing the ability for more intelligent scheduling.

而且，随搜索结果的积累，窗口中未被搜索的PN空间量减小，从而降低了找到强导频的概率，提高了更智能化调度的能力。

This to searcher it is very inequitable, the Chinese netizen that still has a lot of unwisdom of course is undertaking searching with Baidu.

这个对于搜索者来说是很不公平的，当然仍然有很多愚昧的中国网民在用百度进行搜索。

You need to lie low for a while.

你们得歇手一段时间

If you do, you may just be pleasantly surprised.

如果你开口问了，或许有意想不到的惊喜。